I″ron‐stone′ (?), n. A hard, earthy ore of iron.
Clay ironstone. See under Clay. — Ironstone china, a hard white pottery, first made in England during the 18th century.
Webster's Dictionary 1913
I″ron‐stone′ (?), n. A hard, earthy ore of iron.
Clay ironstone. See under Clay. — Ironstone china, a hard white pottery, first made in England during the 18th century.